Summary Of Higain Loopback Codes And Activation Methods - ADC HiGain H2TU-C-388 User Manual

Testing
Table 15. Summary of HiGain Loopback Codes and Activation Methods
Loopback Code
NLOC 1111000
4-in-7
NREM 1110000
3-in-7
CLOC 1111100
5-in-7
CREM 1111110
6-in-7
COLB
RULB
SMJK LpUp 11000
(PL) 2-in-5
SMJK LpUp 1111-1111-
0100-1000
(ESF-DL)
SMJK LpDn 11100
(PL) 3-in-5
SMJK LpDn 1111-1111-
0010-0100
(ESF-DL)
HiGain systems feature the SmartJack option which can emulate a Network Interface Device
(NID) for the purpose of loopback testing of the HiGain circuit. SMJK and NREM loopbacks
perform the same functions, but their initiation differs. SMJK indicates that the loopback was
initiated by the 2-in-5 inband command. NREM, on the other hand, is initiated by the 3-in-7
inband command or by a command issued from the maintenance terminal or the MODE and SEL
buttons.
Use the inband commands to enable or disable the SMJK loopback options. The H2TU-C-388
system setting is normally enabled to recognize all inband SmartJack loopback commands.
40
Description
DSX-1 signal is looped back to the network at the H2TU-C.
DSX-1 signal is looped back to the network at the H2TU-R.
Signal from the customer is looped back to the customer
at the H2TU-R.
Signal from the customer is looped back to the customer
at the H2TU-C.
Dual loopback at the H2TU-C. DSX-1 signal is looped back
to the network at the H2TU-C and signal from the customer
is looped back to the customer at the H2TU-C.
Dual loopback at the H2TU-R. DSX-1 signal is looped back
to the network at the H2TU-R and signal from the customer
is looped back to the customer at the H2TU-R.
SmartJack Loopup or NID payload (PL) code. Invokes
H2TU-R loopback towards network.
SmartJack Loopup or NID (ESF-DL) code. Invokes
H2TU-R loopback towards network.
SmartJack Loopdown or NID payload (PL) code. Removes
SMJK, NLOC, NREM, CLOC, CREM, CRGx, and NRGx.
SmartJack Loopdown or NID (ESF-DL) code. Removes
SMJK, NLOC, NREM, CLOC, CREM, CRGx, and NRGx.
June 6, 2000
152-388-100-02, Issue 2
Method of Activation
Test Set Craft Port MODE/SEL
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